This is no biggie, but would it be possible to confine toolbar icon changes introduced in updates into new themes?
It seems like JetBrains changes the toolbar icons with every significant release. After updating, I'm left staring at the toolbar looking for "that icon I know does such and such" only to discover "that icon" is now replaced by "another icon". Of course, I'll eventually remember the new icons, but honestly, I usually have more important things to do at the moment I'm looking for a particular icon.
It would be nice if you encapsulated the new iconography into a new theme. I could then apply that theme at my leisure rather than being jolted into adapting to it as soon as an update is applied.
It's no biggie, just a small, short-term, irritating impediment. :-)